Table 1 Baseline characteristics of all study participants divided by urinary nitrate groups
Variables | All participants, n = 14,894 | Urinary nitrate (ng/mL)a | P | |||
|---|---|---|---|---|---|---|
Q1, n = 3714 | Q2, n = 3736 | Q3, n = 3708 | Q4, n = 3736 | |||
Age | 48.67 (18.00) | 53.29 (18.48) | 50.09 (18.10) | 47.11 (17.66) | 44.22 (16.44) | < 0.001 |
Gender | < 0.001 | |||||
Male (N, %) | 7245 (48.64) | 1415 (38.10) | 1761 (47.14) | 2002 (53.99) | 2067 (55.33) | |
Female (N, %) | 7649 (51.36) | 2299 (61.90) | 1975 (52.86) | 1706 (46.01) | 1669 (44.67) | |
Race (N, %) | < 0.001 | |||||
Mexican American | 2668 (17.91) | 614 (16.53) | 614 (18.09) | 686 (18.50) | 692 (18.52) | |
Other Hispanic | 1175 (7.89) | 286 (7.70) | 293 (7.84) | 306 (8.25) | 290 (7.76) | |
Non-Hispanic White | 7011 (47.07) | 1916 (51.59) | 1740 (46.57) | 1653 (44.58) | 1702 (45.56) | |
Non-Hispanic Black | 3184 (21.38) | 710 (19.22) | 846 (22.64) | 862 (23.25) | 766 20.50) | |
Other race—including multi-racial | 856 (5.75) | 188 (5.06) | 181 (4.84) | 201 (5.42) | 286 (7.66) | |
PIR (N, %) | 0.276 | |||||
≤ 1 | 2719 (19.74) | 660 (19.32) | 657 (19.02) | 671 (19.51) | 731 (21.12) | |
> 1 | 11,052 (80.26) | 2757 (80.68) | 2797 (80.98) | 2786 (80.49) | 2730 (78.88) | |
Cotinine (N, %) | < 0.001 | |||||
≤ 0.01 | ||||||
0.01–10 | 10,547 (74.44) | 2900 (82.18) | 2749 (77.22) | 2585 (73.31) | 2313 (65.10) | |
> 10 | 3621 (25.56) | 629 (17.82) | 811 (22.78) | 941 (26.69) | 1240 (34.90) | |
BMI (N, %) | < 0.001 | |||||
< 25 | 4448 (30.33) | 1231 (33.91) | 1118 (30.31) | 979 (26.81) | 1120 (30.33) | |
25–30 | 5019 (34.23) | 1228 (33.83) | 1268 (34.37) | 1289 (35.30) | 1234 (33.41) | |
> 30 | 5197 (35.44) | 1171 (32.26) | 1303 (35.32) | 1384 (37.90) | 1339 (36.26) | |
Hypertension (N, %) | < 0.001 | |||||
No | 9977 (67.14) | 2208 (59.53) | 2397 (64.31) | 2595 (70.23) | 2777 (74.47) | |
Yes | 4883 (32.86) | 1501 (40.47) | 1330 (35.69) | 1100 (29.77) | 952 (25.53) | |
Hypercholesterolemia (N, %) | < 0.001 | |||||
No | 6298 (58.79) | 1618 (56.75) | 1579 (56.92) | 1569 (60.30) | 1532 (61.63) | |
Yes | 4415 (41.21) | 1233 (43.25) | 1195 (43.08) | 1033 (39.70) | 954 (38.37) | |
Diabetes (N, %) | < 0.001 | |||||
No | 13,017 (88.90) | 3118 (85.31) | 3229 (87.91) | 3265 (89.80) | 3405 (92.55) | |
Yes | 1626 (11.10) | 537 (14.69) | 444 (12.09) | 371 (10.20) | 274 (7.45) | |